diff --git a/README.md b/README.md
index f511943ca..8116c3a96 100755
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@
 [![](https://ossrs.net/wiki/images/wechat-badge4.svg)](../../wikis/Contact#wechat)
 [![](https://img.shields.io/twitter/follow/srs_server?style=social)](https://twitter.com/srs_server)
 [![](https://badgen.net/discord/members/yZ4BnPmHAd)](https://discord.gg/yZ4BnPmHAd)
+[![](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fossrs%2Fsrs.svg?type=shield)](https://app.fossa.com/projects/git%2Bgithub.com%2Fossrs%2Fsrs?ref=badge_shield)
 [![](https://ossrs.net/wiki/images/srs-faq.svg)](https://github.com/ossrs/srs/issues/2716)
 [![](https://badgen.net/badge/srs/stackoverflow/orange?icon=terminal)](https://stackoverflow.com/questions/tagged/simple-realtime-server)
 [![](https://opencollective.com/srs-server/tiers/badge.svg)](https://opencollective.com/srs-server/contribute)
@@ -158,6 +159,14 @@ A big `THANK YOU` also goes to:
 We are grateful to the community for contributing bugfix and improvements, please follow the
 [guide](https://github.com/ossrs/srs/contribute).
 
+## LICENSE
+
+SRS is licenced under [MIT](https://github.com/ossrs/srs/blob/develop/LICENSE) or [MulanPSL-2.0](https://spdx.org/licenses/MulanPSL-2.0.html),
+and note that [MulanPSL-2.0 is compatible with Apache-2.0](https://www.apache.org/legal/resolved.html#category-a),
+but some third-party libraries are distributed using their [own licenses](https://github.com/ossrs/srs/wiki/LicenseMixing).
+
+[![](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fossrs%2Fsrs.svg?type=large)](https://app.fossa.com/projects/git%2Bgithub.com%2Fossrs%2Fsrs?ref=badge_large)
+
 ## Releases
 
 * 2022-02-15, Release [v4.0-b9](https://github.com/ossrs/srs/releases/tag/v4.0-b9), v4.0-b9, 4.0 beta9, v4.0.245, 144474 lines.